Lubrication of internal-combustion engines



Feb. 19, 1929.

S. KRALJEVICH LUBRICATION OF INTERNAL COMBUSTION ENGINES Filed April '7,1927 IlIlIIIlII/IlI/b.

IN VE/VTOR 6781/1:

Patented Feb. 19, 1929.

STEVE KRALJEVICH,

OF KAI HOKE, BAY OF ISLANDS, NEW ZEALAND.

LUBRIGATION OF INTERNAL-COMBUSTION ENGINES.

Application filed April 7,

This invention relates to the lubrication of internal combustion enginesand particularly to the lubrication of internal combustion engines asadapted for use upon automobiles and provides improvements whereby acomplete circulation of oil is obtained, and the latter is maintained ina clear and a cool condition.

According to the invention the means employed, comprise a filter incommunication with an oil chamber located below the big ends of theengine connecting rods; a pump having its inlet connected with saidchamber, and its outlet opening over the top thereof; a well adjacentsaid chamber; and a pump having its inlet connected with said well andits outlet in communication with said filter.

The filter contains a horizontal partition partly of gauze and partlysolid, and a vertical partition located above and extending down to thelatter, the space into which the connection from the pump opens, beingbounded by the solid part 0 said horizontal partition, the verticalpartition and the side and top of the filter casing.

The oil chamber located below the big ends of the connecting rods isclosed and has in its top depressions adapted to receive oil andclippers carried by said big ends for the purpose of effectinglubrication of the cylinders.

The invention will be further described in conjunction with theaccompanying drawing, wherein Figure 1 is an elevation partly in sectionof an engine fitted with the improvements.

Figure 2 being a cross sectional view of the lower portion of the crankcase, and showing the arrangement of the pumps and the filter, whileFigure 3 is a vertical section of the filter.

The crank case 1 is provided with an en closed oil chamber 2, locatedand extending below all of the big ends 3 of the engine connecting rods4, the top of said chamber containing depressions 5, into which dippers6 carried by said big ends pass, as the istons reciprocate in thecylinders, in the own glil is supplied by gravity to said chamber 2through a pi e 21 from a filter 7 located above the level oi the latter,and situated where it is readily seen and enabled to be got at, such asfor instance on the dashboard of an automobile.

A pump 8 has its inlet 9 connected with the interior of said chamber 2and its outlet 1927. Serial N0. 181,778.

10 disposed to open over the top of the latter.

A further pump 12, has its inlet 13 connected with a well 14 adjacentthe chamber 2 while its outlet 15 is connected with the filter 7, thelatter containing a horizontal partition 16 partly of gauze and partlysolid, and also a vertical partition 17 located above and extending downto said horizontal partition, the space 18 into which the pump outlet 15opens, being bounded by the solid part of the horizontal partition, thevertical partition and the side and top of the filter casing.

A filling spout 19 fittdd with a gauze strainer 20 is provided to thefilter to enable oil to be placed therein.

In practice the chamber 2 is kept filled with oil, and upon a level ofoil being seen in the filter 7, it is known that said chamber 2 iscompletely full.

Upon the pumps 8 and 12 being set in operation, oil is drawn from thechamber 2 and delivered onto the top thereof, some of the oil being heldin the depressions 5 from which it is scooped up and thrown into thecylinders by the dippers 6, the remaining oil passing to the well 14from which it is returned to the filter 7, by the pump 12.

On entering the filter 7 from the pipe 15 the returned oil passesthrough the gauzes at 16 and 17 and is strained thereby, beforereturning to the chamber 2 via the pipe 21.

The oil is therefore kept circulating, and cool and is strained. eachtime it is returned to the filter 7.

If desired the filter 7 can be provided with a sight opening indicatedat 7 to enable the level of oil therein to be readily observed.

What I do claim and desire to obtain by Letters Patent of the UnitedStates of America is 1. An oil filter comprising a receptacle having anupright imperforate partition rising from the bottom to an intermediatepoint in its depth, segregating the lower part of said receptacle intoside by side chambers, one of which is provided with an outlet and theother, forming a trap, being providedwith a drain plug. a screen at anintermediate level of said receptacle forming a top for the chamberhaving the outlet, an upright screen forming a continuation of saidimperforate partition, and an inlet pipe entering the trap chamber abovethe level of the upright imperforate partition.

2. An oil filter comprising a receptacle haw ing an upright imperforatepartition rising from the bottom to an intermediate point in its depth,segregating the lower part of said receptacle into side by sidechambers, one of which is provided With an outlet and the other, forminga trap, being provided Witha drain plug, a screen at an intermediatelevel of said receptacle forming a top for the chamher having theoutlet, an upright screen forming a continuation of said imperforatepartition, an inlet pipe entering the trap chamher above the level ofthe upright imperi'orate partition, and a filling opening communicatingwith said receptacle at a point above the top of said chamber having theoutlet, and on the side of the upright screen opposite the inlet pipe.

In testimony whereof I have signed my name to this specification.

STEVE KRALJEVICH.

